Partridge, C. (1905). Cross River natives: Being some notes on the primitive pagans of Obubura Hill district, southern Nigeria, including a description of the circles of upright sculptured stones on the left bank of the Aweyong River. Hutchinson.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিPartridge, Charles. Cross River Natives: Being Some Notes on the Primitive Pagans of Obubura Hill District, Southern Nigeria, Including a Description of the Circles of Upright Sculptured Stones on the Left Bank of the Aweyong River. London: Hutchinson, 1905.
M.L.A (8 ম সংস্করণ) উদ্ধৃতিPartridge, Charles. Cross River Natives: Being Some Notes on the Primitive Pagans of Obubura Hill District, Southern Nigeria, Including a Description of the Circles of Upright Sculptured Stones on the Left Bank of the Aweyong River. Hutchinson, 1905.